Self sufficient

It's solar-powered, syncs with your smartphone for the time and settings, and is tough as steel. Convincing enough?

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₹ 19,995/casio.​com/in

What particularly stands out about the GBM-2100 is the use of metal, and with finishing that absolutely screams its use of materials. The top of the case gets a brushed matte finish, while the chunk of it is shiny. It's immediately striking and visibly brilliant, but also susceptible to scuffs and nicks.

You'll never need to change the battery on the GBM-2100, and the Tough Solar system can easily harvest enough power to keep the watch running continuously, as long as you keep wearing it, charging the built-in power storage with not just sunlight, but even artificial or hazy lighting.